**EXHIBIT B** 

 **Certificate of Final Acceptance** 

 This Certificate of Final Acceptance is delivered on the date set out below
by Great Lakes Aviation, Ltd. (“Lessee”) to Raytheon Aircraft Credit Corporation (“Lessor”) pursuant to the Operating Lease Agreement dated
                    , between Lessor and Lessee (the “Lease”). The capitalized terms used in this Certificate shall have the meaning given
to such terms in the Lease. 

  




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| 1. | **DETAILS OF THE ACCEPTANCE**  |

 Lessee hereby confirms to Lessor that
Lessee has, at          o’clock on this      day of             , accepted the following, in the condition required and in
accordance with the provisions of the Lease: